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<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
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<p>判断是否为数组。</p>
<p id="demo"></p>
<script>
var fruits = ["Banana", "Orange", "Apple", "Mango"];
document.getElementById("demo").innerHTML = isArray(fruits);
function isArray(myArray) {
    return myArray.constructor.toString().indexOf("Array") > 1;
   // return myArray.constructor.toString().indexOf("Array") > -1;
}
</script>

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